Air-pressure liquid-transfer device



H. G. DIFFENBAUGH.

AIR PRESSURE LIQUID TRANSFER DEVICE.

APPLICATION FILED MAY 8. l9l9.

1,328,133, Patented (1311.13, 1920. v

2 SHEETS-SHEET 1.

H. G. DIFFENBAUGH.

AIR PRESSURE LIQUID TRANSFER DEVICE.

APPLICATION FILED MAY 8 1919.

1,328, 1 33. Patented J an. 13, 1920.

2 SHEETS-SHEET 2.

5 W U1 1 1 7 F srnrs "er HARRY G. DIFFENBAUGH, 0F SALT LAKE CITY, UTAH.

AIR-PRESSURE LIQUID TRANSFER DEVICE.

Specification of Letters Patent. Patented Jan. 13, 1920.

Application filed May 8, 1919. Serial No. 295,809.

My present invention relates to improvements in apparatus for transferring liquids from closed receptacles by means of air pressure, and it is primarily intended to provide a portable arrangement which may be conveniently transported from place to place and used for emptying receptacles containing gasolene or other fluids by the application of air pressure.

My invention will be more fully understood after reference to the accompanying drawings, in which like parts are indicated by similar reference symbols throughout the several views, and in which Figure 1 is a plan view showing the complete apparatus as applied to a cylindrical gasolene tank, parts being broken away.

Fig. 2 is a side elevation of the complete apparatus shown in Fig. 1, parts being broken away for the sake of clearness in the drawings.

Fig. 3 shows a section on a larger scale through the air tight joint between the pumping apparatus and the container, parts being shown in elevation, and the section being taken along the line 33 of Fig. 1.

Fig. 4 shows a section along the broken line H of Fig. 3, and looking down; and

Fig. 5 is a sectional elevation of a modification adapted to be used with containers having smaller filling holes.

Referring first to Figs. 1 to 4, X represents the container, which is shown of cylindrical form with a flat head X and a re inforcing ring X around the filling hole 00, which ring may be either internally or eX- ternally screw-threaded to receive the cap for closing said hole, which cap is not shown in the drawings.

A represents the main frame, which is preferably in the form of a T-shaped casting, having the stem A and the arms A which latter arms are provided with internally screw threaded bosses a into which engage the adjusting screws B, turned by the butterfly heads I).

The other end of the main stem of the casting A is provided with a housing A which is preferably of cylindrical cross section, and is adapted to fit over and be concentric with the filling hole as of the container, as shown most clearly in Figs. 2 and 3.

Projecting down through this housing and through the filling hole 00 is the delivery pipe C, which is connected to the receptacle by an air tight joint, as will be hereinafter fully described.

The main stem A of the casting A is preferably flanged at the top and bottom, as at a and a, see Fig. 2, and on the upper flange a the air compressor cylinder D is secured, as by means of the bolts 03. The compressor piston E reciprocates in the cylinder D, and is driven by the connecting rod E pivoted to the short crank arm F, secured on the upper end of the vertical shaft F, which shaft carries a gear pinion G and a fly wheel H; said fly wheel rotating beneath the frame and between the screws B, as shown most clearly in Fig. 3.

The gear pinion G meshes with the gear wheel I, carried on the shaft J, and driven by the handle 70 carried by. the crank arm K, which may be adjustably connected to said shaft as by means of the socket piece is and the clamp screw 70 This shaft J is journaled in suitable bearings: a and a carried by or integral with the frame A.

While I have shown the pinion G and the gear wheel I as right angle helical gears, any other suitable gearing may be adopted if desired for driving the air compressor piston E and the fly wheel H by means of the hand crank K.

The air compressor cylinder D is provided with the usual inlet pipe M, controlled by a suitable valve m, and the compressor air pipe N controlled by a valve 0%. The

pipe M opens into the atmosphere, while the pipe N opens into the air pressure pipe P, which is connected by the pipe P to the chamber a in the housing A shown in detail in Fig. 3. This chamber a is connected by the passage a to the filling hole cc of the container X.

Q represents a cylindrical sleeve, which is I screw-threaded on its upper end, as at g, and is provided on its lower end with laterally projecting arms Q, in which are journaled the dogs R, which dogs are pivoted on the pins S mounted in said arms Q. These dogs have the upwardly projecting arms 1' adapted to engage the projections g on said arms Q. These arms 9" of the dogs are also adapted to engage the downwardly projecting lugs a carried by the housing A which housing is provided with an annular rib a", which provides an annular chamber for the packing U surrounding the sleeve Q.

The packing U is pressed down by the gland V secured on to the screw threads and over the upper end of the sleeve Q is screwed another gland V containing a washer WV, and pressing down on the packing U. These two glands take care of any possible leaks of the air from the interior of the container between the outer wall of the sleeve Q, and the housing A and between the inner wall of said sleeve Q and the liquid delivery pipe C.

The housing A is also provided with a downwardly projecting cylindrical portion a over which is slipped the packin ring Y, which is preferably in the form of a rubber gasket.

In order to apply the apparatus to the container, the glands are set up on the pipe 0 in the position shown in Fig. 8, and the dogs B have their arms 7 swung inward, as indicated in dotted lines in Fig. i; now if the pipe C be turned around clockwise, which may be done by setting up on either or both of the glands, the sleeve Q, will be moved around in the direction of the arrows in Fig. 4, causing the arms 1 of the dogs R to bring up against the lugs a of the housing A and the further setting up on either or both of the glands will cause the upper edges of the dogs to engage beneath the head X. of the receptacle, and will compress the gasket Y, forming an air tight joint between the receptacle and the housing around the filling hole 00.

When a tight joint has been made of the various parts, the air compressor is set in operation, forcing the compressed air into the container, and air may be allowed to remain there under compression so that it will only be necessary to turn the cock 0 in order to secure a supply of fluid from the delivery pipe C and the branch pipe C connected thereto.

The branch pipe C may be made of any suitable length, and a hose (not shown) may be attached thereto to convey the liquid to any suitable nearby receptacle, such as the fuel tank of an automobile.

It will not be necessary to have any great pressure of air in the container X, as it will require only very small pressure to force liquid out of any container of ordinary dimensions; moreover, the pipe C may be raised or lowered, and then clamped at the desired position relative to the bottom of the container, so that the apparatus is readily adjustable to containers of varying depth.

The screws B are used to adjust the frame to the proper position, but when these screws are once adjusted for the same type of container, it will not be necessary to shift them agaln.

The apparatus shown in Figs. 1 to 4: is adapted for use with containers having a sufliciently large filling hole for the insertion of the pipe C, the surrounding sleeve Q and the dogs R carried by said sleeve; but when this filling hole is not large enough an adapter may be used, such as is shown in Fig. 5, in which the sleeve Q and dogs it project down into a chamber a which has a nipple e" that screws down into the screw threads on the interior of the reinforce 0a" of the container head X. In this case the gasket Y is compressed by screwing down on the nipple a, and a tight joint is secured. (Jtherwise the operation of the apparatus is the same as that already described. I

it will be seen that I provide a device'in which the liquid being handled does not come in direct contact with the working parts of the device; that the device is capable of instantaneous attachment to existing containers for oils, acids, and other liquids, without any structural change in said containers; that the method of attachm to said containers is such as to obviate any loss of the liquid being handled, by leakage, evaporation or otherwise; and that the method of operation is such that the mechanism does not need to be operated continuously while the liquid is being drawn off, but the pressure being accumulated, the mechanical operation may be discontinued while the liquid is allowed to escape from the container.

t will be obvious that various modifications might be made in the herein described apparatus, and in the construction, combination and arrangement of parts, which could be used without departing from the spirit of my invention; and I do not mean to limit the invention to such details except as particularly pointed out in the claims.

Having thus described my invention what 1 claim and desire to secure by Letters Pat ent of the United States is 1. Apparatus of the character described, adapted to be used with containers for liquids having a head with a filling hole provided in said head, comprising a main frame mounted over the container, and provided with an arm projecting above said filling hole, a delivery pipe passing downwardly through said arm and through said filling hole and terminating at its lower end above the inner face of the bottom of the container, the upper end of said pipe being normally closed by a suitable valve, means for forming a tight joint between said frame and said container over the space surrounding said pipe, an air compressor carried by said frame, means for driving said air compressor, and an air pressure pipe leading from said air compressor to the space between said delivery pipe and the walls of said filling hole, substantially as described.

2. Apparatus of thecharacter described, adapted to be used with containers for liquids having a head with a filling hole provided in said head, comprising a main frame mounted over the container, and provided with an arm projecting above said filling hole, a delivery pipe passing clownwardly through said arm and through said filling hole and terminating at its lower end above the inner face of the bottom of the container, the upper end of said pipe being normally closed by a suitable valve, means for forming a tight joint between said frame and said container over the space surrounding said pipe, an air compressor carried by said frame, a hand crank and gearing driven thereby for driving said air compressor also carried by said frame, and an air pressure pipe leading from said air compressor to the space between walls of said filling hole, described.

3. Apparatus of the character described, adapted to be used with containers for liquids having a head with a filling hole provided in said head, comprising a main frame mounted over the container, and provided with an arm projecting above said filling hole, a delivery pipe passing clownwardly through said arm and through said filling hole and terminating at its lower end above the inner face of the bottom of the container, the upper end of said pipe being normally closed by a suitable valve, means for forming a tight oint between said frame and said container over the space surrounding sai d pipe, comprising a series of lugs pro ecting downward from said frame through said filling hole into said container,

substantially as said delivery pipe and the a sleeve through said filling hole, means for closing the air passage between said sleeve and said pipe and between said pipe and said frame, dogs carried by said sleeve and adapted to be held within said container, means operated by said dogs for forming an air-tight joint between said frame and said container, an air compressor carried by said frame, means for driving said air compressor, and an air pressure pipe leading from said air compressor to the space between said delivery pipe and the walls of said filling hole, substantially as described.

4:. Apparatus of the character adapted to be used with containers for liquids having a head with a filling hole provided in said head, comprising a main frame mounted over the container, and provided with an arm projecting above said filling hole, a delivery pipe passing downwardly through said arm and through said filling hole and terminating at its lower end above the inner face of the bottom of the container, the upper end of said pipe being normally closed by a suitable valve, means for forming a tight joint between said frame and said container over the space surr0unding said pipe, comprising a series of lugs projecting downward from said frame through said filling hole into said container, a sleeve mounted over said pipe and projecting down through said filling hole, means for closing the air passage between said sleeve and said pipe and between said pipe and said frame, dogs carried by said sleeve and adapted to be held within said container, means operated by said dogs for forming an airtight joint between said frame and said container, an air compressor carried by said frame, a hand crank and gearing driven thereby for driving said air compressor also carried by said frame, and an air pressure pipe leading from said air compressor to the space between said delivery pipe and the walls of said filling hole, substantially as described.

HARRY G. DIFFENBAUGH.

described, 

